Annals of Occupational and Environmental Medicine

Jung Chul Kim

2 Articles

Urinary 2-Ethoxyacetic Acid for Biological Monitoring of Workers Exposed to 2-Ethoxyethyl Acetate: Kwang Jong Kim, Sang Gyu Sung, Jung Chul Kim, Hae Joon Kim; Korean Journal of Occupational and Environmental Medicine 1999;11(2):276-286. Published online June 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.2.276

Abstract PDF: This study was carried out to evaluate the association between urinary 2-ethoxyacetic acid(EAA) as a new indicator of biological monitoring for the workers exposed to 2-etho xyethyl acetate(EEA) and independent variables such as the EEA exposure concentration, exposure dose, total EEA absorption amount, work duration, and alcohol consumption. In this study the subjects were the total of 160 drawn from 75 workers who were occupationally exposed to EEA and 85 workers who were not. The results were as follows: 1. In the electronic painting workplace, EEA exposure concentration in the breathing zone of the spray workers was the highest, as showed 2. 88ppm(0. 01-15.1 ppm) and cases of exceeded threshold limit value(TLV = 5ppm) were 12.0% among the total of 75 exposed workers. 2. Four workers(5. 4%) of exposed workers indicated more than 50.0 mg/g creatinine of urinary EAA, the geometric mean urinary EAA in exposed workers was 2.49 mg/g creatinine, and was higher than that of workers who were not exposed. 3. In the spray workers of auto products, the geometric mean of urinary BAA was the highest showing 5.76 mg/g creatinine. 4. The difference of urinary BAA by EEA exposure level was significant and the correlation coefficient between urinary BAA and EEA in air was the highest showing 0. 53O(p < 0.01). In conclusion, the amount of urianry EAA proved to be a good parameter for biological monitoring of workers exposed to EEA.

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Development of Technology for Environmental Assessment and Biological Monitoring of Workers Exposed to Benzene: Chul Whan Cha, Kwang Jong Kim, Jung Chul Kim, Nam Won Paik; Korean Journal of Occupational and Environmental Medicine 1994;6(1):122-133. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.122

The objective of this study were to evaluate a correlation between airborne benzene concentrations and urinary muconic acid and to evaluate that between airborne benzene concentrations and urinary phenol concentrations. The high performance chromatographic method was used to measure the muconic acid concentrations in urine samples collected from 69 workers exposed to benzene and 155 non-exposed workers. The time weighted average benzene concentrations in breathing zone of workers were also determined. The physical examination and blood counts (hemoglobin, hematocrit, red blood cell, and white blood cell) were made for both workers exposed to benzene and control group. The results are as follows; 1. The geometric mean of airborne benzene concentrations for all workers was 2.0ppm (0.1-56.9ppm). The mean airborne benzene concentration of workers in adhesive tape manufacturing industry was 12.2ppm (8.3-56.9ppm), which was the highest by type of industry. 2. The geometric mean concentration of muconic acid in urine from male workers exposed to benzene was 3.9 mg/l (0.8-40.8 mg/l), which was significantly higher than that of non-exposed workers. The highest muconic acid concentration was indicated in the workers at the adhesive tape manufacturing industry. 3. There was a significant difference between the mean concentration of muconic acid of workers exposed to airborne benzene concentration of 5-10 pm and that of workers exposed to concentrations below 5 ppm. The urinary muconic acid concentration were correlated with airborne benzene concentration for workers (r=0.85). However there was no significant correlation between urinary phenol concentrations and airborne benzene concentrations. 4. The correlation coefficients between the urinary muconic acid concentration and airborne benzene concentration, urinary phenol concentration, exposure dose(airborne benzene concentration x work duration) and white blood cell were 0.85, 0.74, 0.63 and -0.33, respectively.

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Estimating Benzene Exposure Level over Time and by Industry Type through a Review of Literature on Korea
Donguk Park, Sangjun Choi, Kwonchul Ha, Hyejung Jung, Chungsik Yoon, Dong-Hee Koh, Seunghun Ryu, Soogeun Kim, Dongmug Kang, Kyemook Yoo
Safety and Health at Work.2015; 6(3): 174. CrossRef
Occupational Lymphohematopoietic Cancer in Korea
Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S99. CrossRef
Occupational exposure to benzene in South Korea
Seong-Kyu Kang, Mi-Young Lee, Tae-Kyun Kim, Jeong-Oh Lee, Yeon Soon Ahn
Chemico-Biological Interactions.2005; 153-154: 65. CrossRef

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